Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 19

New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	607-592	not yet reported which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ITHACA	NY
—	607-594	not yet reported which blocks →	EMPIRE TEL. CORP.	0093	ODESSA	NY
—	607-597	2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	CORTLAND	NY
—	607-598	0XXX3XXX4XXX5XXX · 4 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	LOCKWOOD	NY
—	607-600	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC- NY	384C	CANASERAGA	NY
—	607-603	0XXX1XXX3XXX6XXX7XXX8XXX · 3 holders which blocks →	NORTHLAND NETWORKS, LTD. - NY	7556	ITHACA	NY
—	607-605	0XXX1XXX6XXX · 3 holders which blocks →	NORTHLAND NETWORKS, LTD. - NY	7556	CORTLAND	NY
—	607-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY
—	607-621	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BINGHAMTON	NY
—	607-622	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	TC SYSTEMS, INC. - NY	7140	BATH	NY
—	607-625	7XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	APALACHIN	NY
—	607-627	0XXX2XXX3XXX5XXX7XXX8XXX · 6 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	SMYRNA	NY
—	607-637	not yet reported which blocks →	HANCOCK TEL. CO.	0099	HANCOCK	NY
—	607-638	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	SCHENEVUS	NY
—	607-639	not yet reported which blocks →	DEPOSIT TEL. CO., INC.	0089	AFTON	NY
—	607-642	6XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	NEWARK VLY	NY
—	607-643	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	ONEONTA	NY
—	607-644	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	BINGHAMTON	NY
—	607-645	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	ITHACA	NY
—	607-647	3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	MCDONOUGH	NY
—	607-648	not yet reported which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	CHENANGBDG	NY
—	607-651	0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	VERIZON NEW YORK, INC.	9104	BINGHAMTON	NY
—	607-652	0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	STAMFORD	NY
—	607-654	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	CORNING	NY
—	607-655	not yet reported which blocks →	DEPOSIT TEL. CO., INC.	0089	WINDSOR	NY
—	607-656	3XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	GREENE	NY
—	607-657	1XXX3XXX5XXX6XXX7XXX · 4 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	BERKSHIRE	NY
—	607-658	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	ENDICOTT	NY
—	607-659	2XXX6XXX · 2 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	CANDOR	NY
—	607-661	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	HORNELL	NY
—	607-662	3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	CORTLAND	NY
—	607-664	0XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VERIZON NEW YORK, INC.	9104	BATH	NY
—	607-666	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC- NY	384C	BINGHAMTON	NY
—	607-669	2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	HAWLEYTON	NY
—	607-674	0XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	SHERBURNE	NY
—	607-684	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CORNING	NY
—	607-687	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	OWEGO	NY
—	607-689	0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 8 holders which blocks →	VERIZON NEW YORK, INC.	9104	OWEGO	NY
—	607-692	5XXX which blocks →	CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY	0096	WHITNEY PT	NY
—	607-693	not yet reported which blocks →	DEPOSIT TEL. CO., INC.	0089	HARPURSVL	NY
—	607-695	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks →	VERIZON NEW YORK, INC.	9104	CAMERON	NY
—	607-697	3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks →	PAETEC ITEL, LLC	829J	ITHACA	NY
—	607-698	0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	VERIZON NEW YORK, INC.	9104	CANISTEO	NY
—	607-699	0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	VERIZON NEW YORK, INC.	9104	NICHOLS	NY
—	607-700	not yet reported which blocks →				NY
—	607-708	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	DRYDEN	NY
—	607-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	NY
—	607-717	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	CORTLAND	NY
—	607-720	not yet reported which blocks →	VERIZON NEW YORK, INC.	9104	BINGHAMTON	NY
—	607-721	0XXX which blocks →	VERIZON NEW YORK, INC.	9104	BINGHAMTON	NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.